Heating apparatus



E. EDSEN HEATING APPARATUS Sept. 29, 1925. 1,555,406

Filed Aug. 9, 1920 2 Sheets-Sheet 1 WO/FA-VW Sept. 29, 1925.

E. EDSEN /i 51 4 d waawdg E [1W at 1:1 E E1 5 E11 Patented Sept. 29, 1925.

UNITED STATES EDWARD EDSEN, OF MILWAUKEE, WISCONSIN.

HEATING APPARATUS.

Application filed August 9, 1920. Serial No. 402,164.

To all whom it may concern:

Be it known' that I, ED ARD EDsr'fN, a citizen of the United States, and resident of Milwaukee, in the county of Milwaukee and State of Wisconsin. have invented certain new and useful Improvements in Heating Apparatus; and I do hereby declare that the following is afull, clear, and exact description thereof.

" DIy invention relates to new and useful improvements in heating apparatus, and it pertains particularly to auxiliary heating means for steam boilers and the like.

It is the principal object of this invention to provide an auxiliary heating means which can be incorporated in various forms of furnaces and boilers which are already in use or which can be made a part of such heating apparatus which is just being built.

An additional object of the invention is to provide an apparatus of this character which will greatly facilitate the formation of steam in any type of boiler and ata less cost than has heretofore been possible.

Still another object is toprovide such an apparatus which, when in use will prevent the fluctuation of the water level in the boiler, this being conducive to a much more efiicient operation of the apparatus.

With these general objects in view the invention consists in the novel fe'atures'of construction, combination and arrangement of parts which will be hereinafter more particularly described and claimed.

In the accompany drawing:

Figure 1 is a sectional viewthrough a standard Stirling boiler showing the appli- 5 cation of the invention thereto.

' Figure 2 is a part sectional view corresponding approximately to a section on the line 22 of Figure 1.

Although the invention is illustrated in connection with a Stirling boiler, it is obvious that the principles thereof may be employed with other forms of boilers and steam generating plants. Consequently, varlous changes may be made in the form and proportions of the different parts of the invention without departing from the advantages thereof.

As shown in the accompany drawing, a Stirling boiler comprises three transverse parallel steam and water drums 1, 2 and 3 arranged in the upper portion of-a suitable setting 4 of brick work. and connected with a lower transverse water drum 5 by plurality of water tubes 6. The lower drum 5 is set back of the fire box 7 and the heat from the latter is directed by means of suitable baflles 8 between and through the several sets of water tubes 6. The steam-space of the middle upper drum 2 is interconnected to bothtlie rear and front drums, 1 and 3 respectively by row of curved steam circulating tubes 9and 10 respectively, and to the water space of the front drum 3 by water circulating tubes 11. The main steam outlet 2' is preferably placed on the top of the middle drum and the rear drum has a feed.

pipe 12 entering the same.

of which are vertically super-imposed. The

free or forward ends of the legs of the several tubes extend through the front wall 16 of the boiler setting and are closed by clean-out plugs 17, while the connected ends extend inwardly to a point adjacent the forward-most water tubes 6.

The lower most leg of the lower tube of each coil 13 has that portion of itsend extending outwardly of the boiler setting connected with a supply pipe 18, the same extending back through the brick workbeneath the grate 14 to the lower water drum 5. The upper-most leg of each upper tube 15 has the similar portion thereof connected through a return pipe 19 to the middle transverse drum 2. The portion of the re turn pipe 19 which extends into the drum 2 is enlarged as at 20' and opens below the water level of the drums 1, 2 and 3. The

, coils13 wherein the high temperature of the fire' chamber will rapidly increase the heat of the water to a high degree and convert a large portion of the same into steam before the drum 2 is reached. The circulation of water and steam through the heating appa ratus is obviously very rapid and" in view thereof, the circulation within the main parts of the boiler is greatly increased. The possibility of collection of scale within the several tubes and pipes of the system is thus practically eliminated.

I claim:

A heating apparatus comprising a chamberhaving a front wall and having grate bars spaced from the bottom thereof, a mud drum located in the rear lower portion of said chamber, a series of upper drums located in the upper portion of said chamher, a plurality of pipes connecting said upper drums with said mud drum and extending downwardly and rearwardly through said chamber, pipes connecting the upper portion of said upper drums witheach other, a pipe leading from said mud drum through the front wall of said chamber and extending below said grate bars and extending upwardly in front of said front wall, a

plurality of looped pipes extending inwardy through said front wall with their ends with one of said upper drums by means of a pipe located exteriorly of said chamber and opening into such drum 'at a point below the water level thereof.

In testimony that I claim the foregoing I have hereunto set my hand at Milwaukee, in the county of Milwaukee and State of Wisconsin.

EDWARD EDSEN. 

